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Finding the Fourth Proportional to 668,903.10, 923,374.26 and 410,821.92

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Solution

The fourth proportional to 668,903.10, 923,374.26 and 410,821.92 is: 567,111.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,903.10 : 923,374.26 = 410,821.92 : x
  2. Step 2: Convert to fraction form
    668,903.10/923,374.26 = 410,821.92/x
  3. Step 3: Cross multiply
    668,903.10x = 923,374.26 × 410,821.92
  4. Step 4: Simplify right side
    668,903.10x = 379,342,386,371.78
  5. Step 5: Solve for x
    x = 379,342,386,371.78/668,903.10
  6. Step 6: Final answer
    x = 567,111.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.